US4809447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waterproof breathable sock
Assignee: W.L. Gore and Associates Inc
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Filing: 1987-11-13
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Granted: 1989-03-07
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Expires: 2007-11-13
Abstract
Abstract A multi-component, waterproof, sock-type article is provided comprising a waterproof, non-elastic, non-stretch sole component having a heel portion and a toe portion, a waterproof, non-elastic, non-stretch calf component, the calf component being attached to and forming a seam with the sole component at the heel portion, a vamp component attached to and forming seams with the sole and calf components, the vamp component comprising a waterproof, breathable, elastic, stretchable material having stretchability of more than 70%, the calf component being tapered inwardly proceeding upwardly from the heel portion of the sole component, all seams in the article being sealed with a waterproof material.
Inventors
- 👤 David J. Pacanowsky
- 👤 Ruth S. Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:45
CPC Classifications
A; A43; A43B; A43B23/00; A43B23/02; A43B23/04; A43B23/045; A43B23/047; A41; A41B; A41B11/00; A41B11/005; A43B3/00; A43B3/02; A43B3/04; A43B7/00; A43B7/12; A43B7/125; A41B2400/00; A41B2400/22; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
107 words
A multi-component, waterproof, sock-type article, comprising: (a) a waterproof, non-elastic, non-stretch sole component having a heel portion and a toe portion; (b) a waterproof, non-elastic, non-stretch calf component, said calf component being attached to and forming a seam with said sole component at said heel portion; (c) a vamp component attached to and forming seams with said sole and calf components, said vamp component comprising a waterproof, breathable, elastic, stretchable material having stretchability of more than 70%; (d) said calf component being tapered inwardly proceeding upwardly from said heel portion of said sole component; and (e) all seams in said article being sealed with a waterproof material.
Claim 2
Dependent Claim
107 words
A multi-component, waterproof, sock-type article, comprising: (a) a waterproof, non-elastic, non-stretch sole component having a heel portion and a toe portion; (b) a waterproof, non-elastic, non-stretch calf component, said calf component being attached to and forming a seam with said sole component at said heel portion; (c) a vamp component attached to and forming seams with said sole and calf components, said vamp component comprising a waterproof, breathable, elastic, stretchable material having stretchability of more than 70%; (d) said calf component being tapered inwardly proceeding upwardly from said heel portion of said sole component; and (e) all seams in said article being sealed with a waterproof material.
Claim 3
Dependent Claim
21 words
The article of claim 1 in which each said sole, calf and vamp components are laminates having a plurality of layers.
Claim 4
Dependent Claim
14 words
The article of claim 2 in which each of said laminates are threelayer laminates.
Claim 5
Dependent Claim
29 words
The article of claim 3 in which the inside layer of said three-layer laminate is a knit material having a weight of less than about 2 oz./yd 2 .
Claim 6
Dependent Claim
19 words
The article of claim 4 in which the middle layer of said threelayer laminate is a waterproof, breathable material.
Claim 7
Dependent Claim
15 words
The article of claim 5 in which said waterproof, breathable material is porous, expanded PTFE.
Claim 8
Dependent Claim
19 words
The article of claim 6 in which the porous, expanded PTFE has a microstructure of nodes interconnected by fibrils.
Claim 9
Dependent Claim
17 words
The article of claim 3 in which the outer layer of said laminate is a woven fabric.
Claim 10
Dependent Claim
12 words
The article of claim 1 in which said sole component is breathable.
Claim 11
Dependent Claim
12 words
The article of claim 1 in which said calf component is breathable.
Claim 12
Dependent Claim
15 words
The article of claim 8 in which said sole, calf and vamp component are breathable.
Claim 13
Dependent Claim
25 words
The article of claim 1 having a waterproof, non-elastic, nonstretch gaiter component attached to and forming a seam with the upper portion of said article.
Claim 14
Dependent Claim
18 words
The article of claim 12 wherein said gaiter component is a breathable laminate having a plurality of layers.
Claim 15
Dependent Claim
12 words
The article of claim 13 wherein said laminate is a three-layer laminate.
Claim 16
Dependent Claim
17 words
The article of claim 14 in which the outer layer of said laminate is a woven fabric.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-03-06 | 1992-09-05 | 1993-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-06 | 1996-09-05 | 1997-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-06 | 2000-09-05 | 2001-03-07 | $7700.00 | Window Closed / Lapsed |